Thunderstorm Wind, Montgomery
- When
- July 18, 6:45 PM EST
- Where
- Montgomery County, Bethesda
- Property damage
- $5,000
- Coordinates
- 38.970, -77.120
A rapidly developing squall line produced scattered severe weather as it moved from the northern suburbs of Washington, DC through lower southern Maryland. In Bethesda, large limbs were knocked down.
Every event with a place to put it. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS LWX wrote it up.
A rapidly developing squall line produced scattered severe weather as it moved from the northern suburbs of Washington, DC through lower southern Maryland. In Bethesda, large limbs were knocked down. Numerous large limbs and some trees fell in Prince George's Co, namely in College Park, Riverdale, and Silver Hill. Other damage occurred between Bowie and Brandywine, including several snapped tree tops. Property damage was minimal, including minor roof damage from fallen limbs.In Waldorf, a wind gust of 71 mph was reported. An observer in White Plains (Charles Co) recorded a 61 mph gust. In the District of Columbia and immediate Maryland suburbs, 20,000 customers were without power during the height of the storm. In Anne Arundel Co, at least 8 large limbs fell onto roads and into yards, but no direct property damage was reported. In all, 25,000 Baltimore Gas and Electric customers lost power during the storm; 18,000 of those were in Anne Arundel Co.
The national radar mosaic for the moment the first event began.
3 thunderstorm wind. Local standard time, as filed.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Maryland in 1997Every state in 1997This day in weather historyWarnings in Maryland, July 1997
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 5611201, 5611202, 5611203.